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Efficient bandwidth utilization is an unsolved challenge in wireless domain because of its varying characteristics. From a decade telecom industries are heading towards a new generation with a big change in radio access network. Evolution of 5G (fifth generation in caller networks) technology seems to be a solution for growing bandwidth challenges. Predominantly increased speed, low latency, context aware data transfer and MIMO (multiple in multiple out) remains primary concerns in 5G. To utilize full bandwidth, and give a new range of spectrum to end user for their high speed data requirements, a new flavour of logically dividing network for optimal performance is introduced in the fifth generation of mobile communication. 5G network slicing is a network architecture that enables the multiplexing of virtualized and independent logical networks on the same physical network infrastructure [4]. Each slice is end to end independent, isolated and network tailored to fulfil diverse requirements requested by a particular application. With time, technology enchantment has taken over a long leap in 5G development. Various network slicing architectures were proposed based on different parameters. Network slice is looked at various aspects by different people for better utilization of RAN (radio access network), CN (core network) and Clouds. This paper throw light on some of the major architectures proposed on slicing, along with their limitations. Finally this paper speaks about gaps associated with end to end slicing and scope for elaborated study in the field. |
